Add hannoprint code

hannoprint/Marlin-2.1.2.1/config/examples/BIQU/B1 - SKR 1.4/README.md

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+# BIQU B1 (SKR 1.4) Firmware
+
+Compile with the `LPC1768` environment.
+
+## BLTouch Probe Support
+
+Uncomment `B1_USE_BLTOUCH` for probe customizations.
+
+This configuration retains the use of homing with a Z limit switch. If you want to home with the BLTouch probe, remove your Z limit switch & bracket and enable (uncomment) `USE_PROBE_FOR_Z_HOMING` and `Z_SAFE_HOMING`. Change `Z_MIN_ENDSTOP_INVERTING` from `true` to `false`.

hannoprint/Marlin-2.1.2.1/config/examples/BIQU/B1 - SKR 2/README.md

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+# BIQU B1 (SKR 2) Firmware
+
+Flash drive support is enabled, but jumpers to enable support may not have been installed correctly from the factory. [Follow Biqu's instructions, starting with Step 2](https://github.com/bigtreetech/BIQU-B1-SE-PLUS/blob/master/B1-SE%20fimware/B1-SE-U%20Disk%20Usage%20Tutorial-English.pdf) if flash drive support is not working correctly.
+
+## BLTouch Probe Support
+
+Uncomment `B1_USE_BLTOUCH` for probe customizations.
+
+This configuration retains the use of homing with a Z limit switch. If you want to home with the BLTouch probe, remove your Z limit switch & bracket and enable (uncomment) `USE_PROBE_FOR_Z_HOMING` and `Z_SAFE_HOMING`. Change `Z_MIN_ENDSTOP_INVERTING` from `true` to `false`.

hannoprint/Marlin-2.1.2.1/config/examples/BIQU/B1 SE Plus/README.md

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+# BIQU B1 SE Plus (SKR 2) Firmware
+
+Flash drive support is enabled, but jumpers to enable support may not have been installed correctly from the factory. [Follow Biqu's instructions, starting with Step 2](https://github.com/bigtreetech/BIQU-B1-SE-PLUS/blob/master/B1-SE%20fimware/B1-SE-U%20Disk%20Usage%20Tutorial-English.pdf) if flash drive support is not working correctly.

hannoprint/Marlin-2.1.2.1/config/examples/BIQU/B1 SE/README.md

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+# BIQU B1 SE (SKR 2) Firmware
+
+Flash drive support is enabled, but jumpers to enable support may not have been installed correctly from the factory. [Follow Biqu's instructions, starting with Step 2](https://github.com/bigtreetech/BIQU-B1-SE-PLUS/blob/master/B1-SE%20fimware/B1-SE-U%20Disk%20Usage%20Tutorial-English.pdf) if flash drive support is not working correctly.

hannoprint/Marlin-2.1.2.1/config/examples/BIQU/BX/README.md

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+# Biqu BX Configuration
+
+In `Configuration.h` enable the `MOTHERBOARD BOARD_BTT_SKR_SE_BX_V3` option at the top to specify the BTT SKR SE BX V3.0 motherboard, otherwise the V2.0 board will be applied (slightly farther down).
+
+Enable the `BX_ALL_METAL_HOTEND` option to permit higher printing temperatures for the newer H2 extruder with an all-metal heatbreak.